'The list is long but distinguished' - but here's 2:
1. pre-flighted as usual, got in, checklist complete, crank the engine and a red streak shoots up 30 feet in the air right in front of me: cowl plugs still in
2. Last night, picked up the plane back from annual, spent 2 hours chatting with people at the airport, then decided to go check the tiedowns, battery minder etc. (the MRO folks tied it down for me, so I always check). It was dark already, so I drove onto the ramp, and positioned my car so that the headlights would illuminate the plane so I wouldn't have to do it all with a tiny flashlight. Went out to the plane, realized I needed the plane keys to open the baggage door, came back to the still running car and ta-da!, I had locked myself out of my car, with the car running. All local locksmiths were either closed or would take 1 hour+ to get there. Myself and a couple of line guys and local flight instructors tried to break in, force the windows down, to no avail. Had to call my wife who drove in from the city (45 min) with a spare key. In the meantime, to make matters worse, the new tenant of the spot next to mine, where I had parked my locked car, landed and couldn't park his plane. At least I met someone new and he wasn't too mad.